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This paper describes two dominant patterns of Asian winter climate variability:the Siberian high (SH) pattern and the Asia-Arctic (AA) pattern.The former depicts atmospheric variability closely associated with the intensity of the Siberian high, and the latter characterizes the teleconnection pattern of atmospheric variability between Asia and the Arctic, which is distinct from the Arctic Oscillation (AO).The AA pattern plays more important roles in regulating winter precipitation and the 850 hPa meridional wind component over East Asia than the SH pattern, which controls surface air temperature variability over East Asia.